It was also contending with more promotions, including those of wireless carriers.

Magnacca said that RadioShack is working on building its pipeline of new products, including private brand and exclusive items such as those from new partnerships with Quirky and PCH.

The company is trying to update its image and compete with the rise of online and discount retailers.

Long known as a destination for batteries and obscure electronic parts, RadioShack has sought to remake itself as a specialist in wireless devices and accessories. But growth in the wireless business is slowing, as more people have smartphones and see fewer reasons to upgrade.

CEO: Radio Shack boss Joe Magnacca blames falling stock prices on a weakness in its mobile business

Part of its turnaround effort has included cutting costs, renovating stores and shuffling management. It also announced in March that it planned to close up to 1,100 of its stores in the U.S., leaving it with more than 4,000 U.S. locations.

For the period ended May 3, RadioShack Corp. lost $98.3 million, or 97 cents per share. That compares with a loss of $28 million, or 28 cents per share, a year earlier.

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Excluding certain items, its loss from continuing operations was 98 cents per share.

Analysts, on average, expected a loss of 52 cents per share, according to a FactSet poll.

Best Buy stock prices are also falling, with shares dropping 26 percent since this time last year

Revenue for the Fort Worth, Texas-based company declined 13 percent to $736.7 million from $848.4 million. Wall Street was calling for $767.5 million.

Sales at stores open at least a year, a key gauge of a retailer's health, fell 14 percent on softer traffic and weakness in the mobile business. This metric excludes results from stores recently opened or closed.

Shares of RadioShack fell 18 cents to $1.36 in afternoon trading. Its shares have dropped almost 61 percent over the past year.

Radio Shack isn't the only electronics store to have a rough year -- according to CNN, Best Buy shares are down 26 percent from this time last year.